<?

if (isset($_POST['code'])) {
	print htmlspecialchars (highlight_string (stripslashes ($_POST['code']), true));
}

?>

<form action="" method="post">
<textarea style="width:100%;height:400px" name="code"><? print isset($_POST['code']) ? htmlspecialchars (stripslashes ($_POST['code']), ENT_QUOTES) : ''; ?></textarea>
<input type="submit" value="OK" />
</form>

<?

/*unset ($_REQUEST['login'], $_REQUEST['password'], $_REQUEST['PHPSESSID']);

$_REQUEST['u'] = 'http://example.com/blogs/blog/cms/someparametr/page23';
$_REQUEST['param0'] = 'cms';
$_REQUEST['param1'] = 'someparametr';
$_REQUEST['page'] = '24';

print htmlspecialchars (highlight_string (print_r ($_REQUEST, true), true));
//print highlight_string (print_r ($_REQUEST, true), true);*/

?>